Answer:
option A
Explanation:
The correct answer is option A.
Carbon-14 is a dating technique used to estimate the age of the bone which is less than 40,000 years old.
When an organism dies the carbon 14 is converted into nitrogen 14 so, we can estimate the age of the bone.
This method is used by the archaeologist to find the age of the dead and decay animals present inside the earth's surface to study the earth and creature who have lived on earth.
the phenomenon of the unequal separation in the meiosis is called as nondisjunction. If the nondisjunction causes the missing chromosome in a haploid gamete, the diploid zygote it forms with the another gamete will then contain only one of the copy of that chromosome from the other parent, this condition is known as monosomy.
The term "monosomy" is used to describe the absence of one of the member of the pair of chromosomes. Therefore, there are about 45 chromosomes in each cell of the body instead of that usual of 46.
Turner syndrome is the only and full monosomy that is seen in the humans — all other cases of the full monosomy are the lethal and the individual will not about survive development.
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Fertile soil is valuable because there is a limited supply. Less than one eighth of land on Earth has soil that are well suited for farming.
The thick, fertile soil of the prairies took many thousands of years to develop.
The two ways that the value of soil can be reduced is help use soil correctly, peanuts were once a corp to help soil, and still can be. The soil value recycle rocks and bedrock.
The value of soil is reduced when it loses its fertility and when topsoil is lost due to erosion. Soil can be conserved through contour plowing, conservation plowing and crop rotation. The thick mass of tough roots at the surface of the soil.
